A Proposal For Module Resolution · Issue #50152 · microsoft/TypeScript

Background When a user writes a module specifier (the string literal after from in an import declaration) in a TypeScript file, how should the compiler resolve that string to a file on disk to be included in type checking? Because TypeScript never rewrites module specifiers in its JavaScript emit, the only possible answer is that it should mirror whatever resolution behavior the code’s intended ru

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npmモジュールがnode_modulesではなく、グローバルキャッシュを使う場合に、ambient.dtsをで定義すれば、型チェックがちゃんと動くというbloomberg hack